Nick Nolte is a no-show. He cancelled at the last minute to appear with his documentary, "Nick Nolte: No Exit," leaving the director, Thomas Thurman, holding the bag. So much for his opportunity to join the ranks of such celebrated Karlovy Vary visitors as Karl Marx, Kamal Ataturk, Anton Dvorak and, this year, Robert De Niro, Christopher Lee and Rita Tushingham.